The problem is that k may be greater than n. So you have you write

k = k%n

For example, if we have to make k = 6 rotations in a list containing 3 elements.

It is the same as making 0 rotation. Since every element will be in the

same position after 6 rotations.

k%3 = 0 when k=6

k%3 = 2 when k=5

2 rotations are the same as making 5 rotations.